test another stuff

Die Challenges.md

@@ -56,7 +56,7 @@ print-statement ausgeführt und das Programm wird mit `sys.exit()` beendet.
 
 Das folgende Video zeigt den Ablauf:
 
-<video width="320" height="240" controls src="source/Challenge_1.mp4"></video>
+<video width="320" height="240" controls src="_static/Challenge_1.mp4"></video>
 
 
 ## Challenge 2:

conf.py

@@ -54,4 +54,4 @@ html_theme = 'sphinx_book_theme'
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
-html_static_path = ['source']
+html_static_path = ['_static']